Ptuj Seasonal Pollution
Ptuj usually records its highest OpenAQ-derived EPA AQI in December and its cleanest month in February. The page uses OpenAQ-derived daily history for 2 mapped monitoring locations in Ptuj, Slovenia.
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Average EPA AQI
43
Rank 9 of 17 cities by average AQI
PM2.5
13.8
ug/m3 annualized city average
Seasonality
December
Cleanest: February
Health indicator
0.6
cigarette-equivalent per day
Yearly EPA AQI trend
Seasonal EPA AQI heatmap
JanFebMarAprMayJunJulAugSepOctNovDec
Ptuj
32
22
30
45
41
42
45
36
27
27
78
82
What this seasonality page measures
Find each city's worst and cleanest months from daily OpenAQ-derived EPA AQI.
For Ptuj, the current global analytics build covers 361 daily rows from 2024-01-03 to 2024-12-31. The calculations normalize PM2.5 and PM10 observations into US EPA AQI bands so country, city, and tool pages use one consistent method.